generate 32 or 64 bit binary by gcc

-m32

-m64

compile C program that calls Java

ex:

gcc -o test.o -I/System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Headers -framework JavaVM test.c -m64

show file is 64 bit or 32 bits

ex:

file test.o

Quartz introduction

drawRect:

drawRect method of UIVew is called when a view needs to redraw itself

we usually add drawing code in this function

run terminal from applescript

use & to combine string

ex:

tell application "Terminal"

activate

repeat with i from 1 to 5

do script with command "cd test\\ " & i & ":ls"

set custom title of window 1 to "test" & i

end repeat

end tell

panic reporter

in Console's log files --> /Library/Logs --> PanicReporter

use ReleaseSCSITask to release SCSITaskIdentifier

because GetSCSITask will increase fNumCommandsOutstanding,

we must use this function to decrease fNumCommandsOutstanding